@misc{9111,
  author = {V. Chhaya and S. Saxena and E. Cecil and V. Subramanian and V. Curcin and A. Majeed and R. Pollok},
  title = {Impact of timing and duration of thiopurine treatment on first perianal surgery in Crohn\textquoterights disease: UK population-based study (1995-2009)},
  year = {2015},
  journal = {Inflamm Bowel Dis},
  volume = {21},
  number = {2},
  pages = {385-91},
  issn = {1078-0998},
  doi = {10.1097/mib.0000000000000290},
}